Druids The Old Celtic World Religion Posted on May 27, 2019 by Lady Celestialpetals DRUID GIRL, The Old World Religion Druids The Old Celtic World Religion. Who were the Druids? Druids were the priests of the Celtic people. The Druid priests were killed by Caesar, leaving only scattered Celtic people with no religious leaders. Leave a Comment Cancel Reply Your email address will not be published. Required fields are marked *Comment Name * Email * Website This site uses Akismet to reduce spam. Learn how your comment data is processed.